Showerhead



FIG. 1 is a perspective view of a showerhead showing my new design, looking toward the bottom and side thereof;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a first side view thereof; the remaining side views thereof being identical to that shown. 

The ornamental design for a showerhead, as shown and described. 